Home / 643,587.24-888,091.66-381,897.44

Finding the Fourth Proportional to 643,587.24, 888,091.66 and 381,897.44

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Solution

The fourth proportional to 643,587.24, 888,091.66 and 381,897.44 is: 526,983.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,587.24 : 888,091.66 = 381,897.44 : x
  2. Step 2: Convert to fraction form
    643,587.24/888,091.66 = 381,897.44/x
  3. Step 3: Cross multiply
    643,587.24x = 888,091.66 × 381,897.44
  4. Step 4: Simplify right side
    643,587.24x = 339,159,931,439.35
  5. Step 5: Solve for x
    x = 339,159,931,439.35/643,587.24
  6. Step 6: Final answer
    x = 526,983.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.